Steam and hot-water generator



(N0 Model.)

D. A. DICKINSON. STEAM AND HOT WATER GENERATOR.

Patented July 1, 1890.

THE Noam mavens co. vHoTo-mna, msumaron, o. c

UNITED STATES PATENT OFFICE.

DANIEL A. DICKINSON, OF ST. PAUL, MINNESOTA.

STEAM AND HOT-WATER GENERATOR.

SPECIFICATION forming part of Letters Patent No. 431,037, dated July 1, 1890.

Application filed March 28, 1890. Serial No. 845,665. (No model.)

To all whom it may concern.-

Be it known that I, DANIEL A. DICKINSON, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Steam and Hot-Water Generators, of which the following is a specification.

This invention relates to sectional steam and hot-water generators, more particularly to that class employed in connection with steam or hot-water heating apparatus; and it consists in the manner of constructing the independent generating-chambers, whereby the circulation of the water is maintained and the generation of the steam accelerated, as hereinafter shown and described, and specifically pointed out in the claims.

This invention is an improvement on Patent No. 356,103, granted to me January 18, 1887, and Patent No. 390,461, granted to me October 2, 1888.

In the drawings, Figure 1 is a sectional elevation. Fig. 2 is a plan viewin cross-section on the line X X of Fig. 1. Fig. 3 is a plan View of the sectional steam-dome. Fig. 4 is an enlarged perspective view of one of the sections detached, with a portion broken out to show more fully the position of the circulating partition. Fig. 5 is an enlarged sectional detail showing more clearly the manner of connecting the sections and fire-pot. Fig. 6 is a sectional detail of one side of the series of the hollow sections and the hollow fire-pot illustrating the construction that will be employed when the generator is used in a hot-water heating system.

Arepresents the walls or casing, which may be of any material or form of construction, but which will generally be of brick, and in which the furnace and boiler are embedded, as shown.

B represents the fire-pot, which will be formed in independent hollow sections, as shown, forming when placed in position the fire-pot of the furnace. From each of the firepot sections a branch pipe a leads upward, and is connected to a branch I), projecting downward from hollow segmental sections 0, as shown, the series of sections equaling in number the sections of the fire-pot, and when placed in position, as shown in Figs. 1 and 2, the sections form a series of fiat hollow disks. The lowermost set of these sections 0, when in position, are substantially in contact with each other, but do not quite reach the inner surface of the inclosing-wall A, while the next set of sections above are in contact at their outer rims with the interior surface of the surrounding walls, but are not in contact at their centers, leaving openings cl through the center of each alternate disk formed by the sections, so that the products of the combustion arising from the fire-pot are caused to take a zigzag course through and around the sections and come in contact with every part and also with the corresponding sections D D D of the main steam-dome above them, when the apparatus is employed as a steamgenerator.

.VVhen the apparatus is employed as a hotwater generator, the dome D D D will be dispensed with and the branches 1) in the uppermost set of the sections 0 closed, as shown at g in Fig. (3, and with the piping E for the radiating system leading from the covers g or connected into the body of the upper sections, as preferred. In this construction also the return-piping F from the radiating system is shown connected into the lower part of the fire-pot B. The separate sections 0 composing the disks are not united to each other; but the sections are united perpendicularly by branches b, having flanges 17 by which they are bolted or otherwise fastened together.

Across each of the branches b is a partition 6 and extending sidewise for some distance into the interior of the sections 0, forming thereby curved walls or partitions therein, as shown, and dividing the interior of the sections into two separate compartments with a portion of the partitions in each and communicating around their ends 6 per and lower edges of the partitions e are flush with the flanges b so that when the sections G are united the adjacent edges of the partitions will be in contact; hence when the generator is set up, as shown in Fig. 1, the series of partitions will form a continuous tubular passage throughout the sections 0 and the branches 1;.

The up- When-the apparatus is employed as a steamgenerator the partitions e"within the branches 1) of the lower set of the sections 0 will be turned outward and united to the body of the sections, as shown at e in Fig. 1, so that no connection exists directly between the tubular passage formed by the partitions e and the fire-pot branches at, except on the inner side of the partitions e and their branches e WVhen used as a hot-water generator, the partitions e within the branches 1) of the lowermost set of the sections will be turned inward and united to the body of the sections, as shown at e in Figs. 5 and 6, so that direct connection exists between the tubular passage'formed by the partitions e and the fire-pot connections a.

When used as asteam-generator the steam generated in the several sections will pass upward into the dome D D D through the branches 1), inside the partitions e, and return downward outside the partitions and circulates freely through the sections in its effort, to replace the Water generated into steam, the partition 6' thus insuring the complete rapid and free circulation throughout every portion of the system and preventing any of the dangerous and otherwise objectionable variations in the temperature of the water and steam.

WVhen used as a steam-generator the partitions will be continued upward for some distance into the sections forming the steamdome, as shown at e in Fig. 1, the upper end 6 of 'the extension 6 being above the Waterline in the dome to insure the free separation of the water and steam and the consequent perfect circulation of the water.

The central portions of the disks formed by the sections Creceive a greater amount of the heat than the outer portions, as the flame and other products of the combustion are concentrated at the central portion of each disk,

while the portions near their rims are less highly heated; hence the water near the centers will be more highly heated, and by placing the partitions e, as shown, they separate the highly-heated from the less highly-heated water and cause it to circulate freely in the sections.

When used as a hot-Water generator the water is supplied to the generator wholly through the return-pipes F, entering at the bottom of the fire-pot, as shown in Fig. 6, and thence the water passes upward and into the several horizontal sections outside the partitions 6 therein, and from the body of these sections it continues upward through the branches 1) inside of the partitions to the top, and thence by the outflow-pipe E to the radiators, and thence back again through the return-piping F.

Having thus described my invention, what I claim as new is- 1. In a steam and hot-water generator, a series of hollow disks united by branches Z), and having partitions 6 6 formed across said branches and extending into the interior of said hollow disks, whereby the circulation of the water is accelerated within and throughout said sections, substantially as and for the purpose set forth.

2. In a steam and hot-Water generator, a series of hollow disks united by branches 1), and having partitions 6 6 formed across said branches and extending into the interior of said hollow disks, and a steam-chamber into which said sections are united, substantially as and for the purpose set forth.

- In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

DANIEL A. DICKINSON. Witnesses:

G. N. WOODWARD, II. S. lVEBsTER. 

